Watercraft stabilizer



FIG. 1 is a perspective view of a watercraft stabilizer showing my new design, the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a perspective view thereof showing one pontoon deployed and the other pontoon in stow position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image of that shown;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a side elevational view thereof, the opposite side view being a mirror image of that shown. 

I claim the ornamental design for a watercraft stabilizer, as shown and described. 